2564208128 has 20 divisors (see below), whose sum is σ = 5123409060. Its totient is φ = 1282103808.

The previous prime is 2564208071. The next prime is 2564208131. The reversal of 2564208128 is 8218024652.

It is a junction number, because it is equal to n+sod(n) for n = 2564208091 and 2564208100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2503598 + ... + 2504621.

It is an arithmetic number, because the mean of its divisors is an integer number (256170453).

Almost surely, 2^2564208128 is an apocalyptic number.

It is an amenable number.

2564208128 is a deficient number, since it is larger than the sum of its proper divisors (2559200932).

2564208128 is an frugal number, since it uses more digits than its factorization.

2564208128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008237 (or 5008221 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 2564208128 is about 50638.0107034232. The cubic root of 2564208128 is about 1368.7299092622.

The spelling of 2564208128 in words is "two billion, five hundred sixty-four million, two hundred eight thousand, one hundred twenty-eight".